[Ffmpeg-devel] [PATCH] Machine endian bytestream functions

Måns Rullgård mans
Wed Apr 25 10:14:32 CEST 2007

Ramiro Ribeiro Polla <ramiro at lisha.ufsc.br> writes:

> M?ns Rullg?rd wrote:
>>>> I'm thinking the unaligned16/32/64 macros from bitstream.h should be
>>>> renamed and moved here instead.
>>> I'll take a look.
>> This lets the compiler choose whatever access method is appropriate,
>> and saves us the trouble of maintaining a fragile list
> Is there a way for us to get that information off the compiler? (assume 
> only gcc atm)
> I thought maybe compile a simple read with __attribute__((packed)) and 
> another without the attribute. Then compare object files and assume that 
> if they're equal, unaligned access are ok.
> Is that too ugly/random/unreliable?

That seems quite unreliable.

M?ns Rullg?rd
mans at mansr.com

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